The switch strategy also can be applied to process evaluation. For example, the action model for a school violence prevention program could be clarified using qualitative methods, and the model might end up including components such as teaching students using a prevention curriculum, student group projects on violence prevention, and parental involvement in prevention activities. Based on the action model, evaluators could use quantitative methods. For example, a survey could be used to ask teachers about their implementation of curricula, students about their participation in group projects, and parents about their participation in various school activities.